Investigating the optimization of different substrate on some quantitative and qualitative atributies of golden oyster mushroom (Pleurotus citrinopileatus)

Abstract For the production of various species of oyster mushroom a wide range of lignocellulosic materials different can be used, but to convert biological lignocellulosic waste industrial and agricultural and transport more food from substrate to fruiting body depends to the amount of available foodstuffs in substrate (type culture medium) as well as the power of mycelium degrading agents. Non-localizing technical information on the production of edible mushrooms and the lack of suitable formulation substrate from main problems in the production of commercial and industrial oyster mushroom in the country, so finding a suitable substrate for the production of golden oyster mushroom is first step in the development of this mushroom are be. In this experiment, various wastes from agricultural and industrial products are included: sawdust, wheat straw, date palm leaf wastes, the combination of sawdust with wheat straw (in equal proportion), combination of sawdust with date palm leaf wastes (in equal proportions), combination wheat straw and date palm leaf wastes (in equivalent ratio) as well as chemical supplements of urea (10g per liter in per kg of substrate based on fresh weight of substrate), manganese sulfate (7μg. kg based on dry matter substrate), ammonium phosphate (15g in liter per kilogram of substrate, based on fresh weight of substrate) and bio additives supplement mycorrhizal (one milliliter of Glomus mosseae inoculum per kg of spawn) and vermicompost (6% fresh weight of substrate). After preparing and adjusting the humidity, the substrate was sterilized with using boiling water. In this experiment, some physiological and biochemical traits, vegetative growth and yield golden oyster mushroom were evaluated. The results showed that nitrogen contents of fruit bodies produced on substrate date palm leaf wastes that enrichment with mycorrhizal bio-supplementation were 8.21%, as well as the nitrogen contents of fruit bodies produced on substrate wheat straw that enrichment with ammonium phosphate recorded 4.51%. The completion of the growth stage of mycelium (spawn run) of oyster mushroom in the non-mixed substrate sawdust that enrichment with the mycorrhizal and also in substrate date palm leaf wastes that enrichment with mycorrhiza lasted for 14/60 days, and this stage (spawn run) also took place in substrate wheat straw that supplemented with manganese sulfate lasted 9 days. Also, the highest (2079.00g) and lowest (813.20g) total yield (fresh weight) of fruit bodies were wheat straw substrate that enrichment with manganese sulfate and date palm leaf wastes that enrichment with mycorrhiza respectively. In this study, mixed and non-mixed substrates that were enriched were evaluated weight and quality of fruit produced from wheat straw substrate that enrichment with chemical supplement of manganese sulfate (7μg/kg based on dry matter substrate) were statistically superior to other treatments. Keywords: Food supplements, Organic compounds, Oyster mushrooms, Substrate.